Thermistor
The thermistor monitors the surface temperature of the media-feed portion of the heat roll to control
on/o
of
the main heater lamp and sub heater lamp.
Sensor (fuser output)
The sensor (fuser output) detects the arrival of media at the detection point in the exit area of the fuser, and
also detects the ejection of media from this point.
Sensor (narrow media)
The sensor (narrow media) detects the arrival of narrow media at the detection point in the exit area of the fuser,
and also detects the ejection of media from this point. It is used to make adjustments to ensure that narrow
media is properly fused.
Fuser unit assembly (types 1 and 2)
Type 1 fuser unit assembly
In the type 1 fuser unit assembly, the detacs, which are used to prevent the media from sticking to the hot roll,
do not make contact with the hot roller. The type 1 fuser unit assembly has a life of 300K.
#Part
1 Hot roll
2 Non contact detac
3 Non contact detac
4 Pressure roll
5 Hot roll
6 Pressure roll
7 Fuser lamp
Type 2 fuser unit assembly
In the type 2 fuser unit assembly, the detacs, which are used to prevent the media from sticking to the hot roll,
make contact with the hot roller. The type 2 fuser unit assembly has a life of 150K.
4062
Appendix C: Theory of operation
533
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